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for school yo

2006-11-02 11:20:50 · 11 answers · asked by Anonymous in Science & Mathematics Mathematics

11 answers

A good start would be to learn your tables and spend less time on the computer. Trust me, I'm good at 'mental math', I knew my tables at a very early age and we didn't have home computers then.

2006-11-02 11:53:48 · answer #1 · answered by saljegi 3 · 0 0

Usually by rounding numbers and doing the operations... well, in your head.

48 + 31, for a simple example.
50 + 30 = 80.

If an exact answer is needed you could take the numbers that got rounded out and add them. 89.

Although I'd imagine that this is needed for harder functions.

2006-11-02 11:25:28 · answer #2 · answered by ang 2 · 0 0

You imagine a white board or a piece of paper and ur writing the problem in your imagination. For some people its easier to just write it down.

2006-11-02 11:28:12 · answer #3 · answered by Marisa7993 2 · 0 0

With my fingers and toes, yo!

2006-11-02 11:23:08 · answer #4 · answered by Shibi 6 · 0 1

In your head.

2006-11-02 11:22:28 · answer #5 · answered by Anonymous · 2 0

haha you dont in the real world- u use a calculator!!! if its easier, use your toes!

2006-11-02 11:23:56 · answer #6 · answered by star4danielle 3 · 0 0

Very carefully...

2006-11-02 11:38:47 · answer #7 · answered by hznfrst 6 · 0 0

practicing until you get better

until you can do it in your head!

2006-11-02 11:23:59 · answer #8 · answered by sweetchik5188 2 · 0 0

It's hard to answer

2006-11-02 11:22:50 · answer #9 · answered by dphantom122 1 · 0 0

you do it in your head.

2006-11-02 11:28:00 · answer #10 · answered by commandergree 2 · 0 0

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